*{
    margin: 0;
    padding: 0;
}
header{
    width: 100%;
    background-color: black;
    background-image: url(../images/top-bg.png);
}
div{
    width: 1300px;
    height: 70px;
    margin: 0 auto;
}
ul{
    list-style: none;
    display: inline-block;
    margin-left: 40px;
}
li{
    display: inline-block;
    height: 70px;
    margin-left: 20px;
    text-align: center;
    line-height: 70px;
    
}
a{
    color: #fff;
    text-decoration:none;
}
li:hover{
    background-color: rgba(255, 255, 255, 0.4);
}
.right{
    float: right;
    margin-right: 50px;
}
.left{
    float: left;
    height: 70px;
}
img{
    vertical-align: middle;
}